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118. We denote the mass of the car as
M
and that of the sumo wrestler as
m
. Let the
initial velocity of the sumo wrestler be
v
0
> 0 and the final velocity of the car be
v
. We
apply the momentum conservation law.
(a) From
mv
0
=
(
M + m
)
v
we get
v
mv
Mm
=
+
=
+
=
0
242
2140
242
054
(
..
kg)(5.3 m / s)
kg
kg
m/s
(b) Since
v
rel
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 Spring '08
 Any
 Physics, Mass, Momentum

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